Adjustable single blade chamfering tool



' 11ited StteS Patent Z,852,909 Patenfed Se t. 23, 1958 ADIUSTABLE Sn`IGLE CHAMEERG ffhuf w. 1 iha, Rivefside, and Anfhony SffnfZ, Rivef (fove, 111., asSignofs to Infefnaffooa1 11afvesfef CoIn pany, cofpofoffofl of Now Jefsey Hoaon Angusf 23, 1955, Seo1 No. s30,002

1 c1ain1. (c1. 7773.5)

This invention fe1ates to a too1 adapfed to bo uSed fof pfoviding a chafnfef of countefsink afoUnd the o)en end of a bofev It is a pfiIne obiect of this invention to pfovide an iIT1 )foved chafnfefing too1 which in uSe win pfoduce a sfnooth and niShed chafnfef at the open end of a bofe.

Still anothef object of this invention is to pfovide an iInpfoved chafnfefing tool vvhich elin1inates tool chattef and othef feSUltant vibfationS nofnlaHy encountefed vvith conventiona1 chafflfefing deviceS.

A Sti11 fufthef obiect is fo pfovide a cntting foo1 of the countefSink of chafnfefing type, the said tool being Teadily adapfed fof n1achining di1fefent InafefiaIS vvith satiSfactofy feSUltS and With the e1iff1ination of excessive vibfations fesulting ffom conventional devices,

Still fufthef obiect of the invention is to pfovide a chafnfefing too1 which iS Self-a1igning in the bofe vvhich iS to be chanlfefed, the tool inc1uding inSeftS having weaf stfipS of guides adapted to pilot the tool in the bofe dofing opefation.

stil1 anothef obiect of the invention is to pfovide an iInpfoved chaInfefing tooL the tool having a single cutting blade which is adapted to be moved to a plufality of Settings, thefeby pfoviding a new cutfing edge withouf fefnoval of feShafpening of the blade thuS inSufing 1ong life and ineXpensive opefation.

A StiH othef object iS the pfovision of an ifnpfoved chafnfefing tool having a fen1ovable cutting b1ade, the said blade being feadHy fepIaceable when Wofn oI1t, thUS Saving the blade holding poftion of t11e tool fof fufthef I1Se.

TheSe and fofthef obiectS Win become feadily appafent ffofn a feading of the speci1ication vvhen exafnined iI1 connection With the accoInpanying sheet of dfaWing.

1n the dfaWing= Figufe 1 is a side e1evational vievv-of af1 iInpfoved single blade chafnfefing tool;

Figufe Z fS a ffont elevationa1 vievv of the chamfefing tool shown in Figufe 1;

Figufe 3 iS a plan view of an impfoved chafnfefing Figufe 4 is a vievv, paftia11y in Section, of the body of a chan1fefing tool alSo showing the disposition of an aduStab1e blade with feSpect to Said body;

Figufe S is a cfosS Sectional vieW taken Substantia1ly along the Hne 5s of Figufe 2;

Figufe 6 iS a side elevational view of a poftion of the body of a chafnfefing tool, the said view disc1osing an adiUStab]e cutting blade and nleanS fof secufing the San1e in position;

Figufe 7 iS a ofosS Sectiona1 vievv taken Substantially along the Hne 77 of Figufe 2;

Figufe 8 is a cfosS Sectiona1 vievv, taken a1ong the li11e 88 of Figufe 7, Shovving a fastening device fof secuf ing a cutting blade; and

Figufe 9 is a ffagmentafy view of a pHot inSeft the said vievv being taken Substantial1y a1ong the 1ine 9-, of Figufe 2.

1efefffng fo the ffgI1fes, a chafnfefing too1 iS desig- 11ated by the fefefence chafactef 10. A chan1fefing too1 10 cofnpfiSes a body 11 having at one end a Shank 12 adapted to be insefted in a conventional type of dfill pfeSS of othef fnachine tool (not ShovvfI). The othef end of the body 11 is pfovided With a ffusto-conica1 poftion 13 having a S1ot 14. The slot 14 opens olltvvafdly of the ffuSto-conical poftion 13 and inc1udes a bottom vva11 15 having genefa1ly the San1e slopo of incline aS the Sufface of the ffuSto-conical poftion.13. The s1ot 14 fofthef includeS a Seffated side wan 10 and a s1oping Side waH 17. A outting blade 18 iS dispoSed in the s1ot 14, the said cutting blade being genefally designated by the fefefence chafactef 18.

The cutting blade 18 cofnpfiSeS a cllttiflg odge of Suf face 10, one side of said b1ade 18 being pfovided vvith seffationS 20 which confofm vvith the seffated side wal1 10 aS beSt Shown in FigUfe 4. Thus tho blade 18 may n1ove tfansvefSely of fadially with fespeot to the axis of the tool 10. The cutting blade iS adapted tobe placed of locked in poSition by fneanS of a vvedge 21, beSt Shovvn in Figufe 8, vvhich is secufely vvedged in position by nleans of a set scfew22 diSposed in a thfeaded bofe 23- An enlafgeInent 24 of the bofe 23 accoII11T1odates the head of the Set Scfew 22.

The ffuStoconica1 poftion 14 and the body 11 afe fufthef pfovided vvith a plufaIity of cffcufnfefentially Spaced fecesses 25 aS beSt Shown i11 Figufes 2, 5 and 7. The fecoSSeS 25 have poSitioned thefein pilot inSeftS 26 which fnay be Secufed in said fecesses 25 by bfazing of othef Suitable pfoceSSes. The pi1ot inSefts 20 afe pfo vided with vveaTing Suffaces of StfipS 27 vVhich Tnay be Inade of Suitable hafdened Stfips. AS beSt shown in Figufes 5 and 7 the weafing soffaceS 27 compfise oaf bide stfipS Which may be suitably bfazed to the inseftS 20. The stfipS of Suffaces 27 pfoiect outWafdly With fespect to the ffusto-conica1 Sufface of poftion 13.

1n USo the too1 has itS Shank 12 Suitab1y Secufed iI1 the adaptef of ohuck of a dfi11 pfesS, lathe, of Sifnilaf fna- Chining device, the Shank 12 can be tapofed of Stfaight fof onivefSal adoption (not Shown), An afticle having a bofe to `be chafnfefed iS plaCed iflto ongagefnent vith the conical poftion 13, the Said tool 10 being ondef fotation, The pilot Suffaces 27 engage the ITlatefial adjacent the open end of the bofe and the blade 18 has itS c11tting S11fface 10 begin the chafnfefing opefation, The vveaf stfips 27 suitably Suppoft the blade 10 in position and chattefing of the tool is pfevented by viftue of the posi tive guiding action of the weafing SI1ffaCeS 27. Since these veafing SUTfaceS afe nade of cafbide of siII1ilaf hafdened fnatefiaI, feplacenlent of fhe San1e, due to weaf, is Vefy inffeqllent. By unloosoning the set Scfevv 22 vvith feSpeCt to the Wedge 21 the b1ade 18 fnay be eaSily fnoved fadially of latefally With fespect to the axfS of the tool to pfeSent a new vveafing s11fface if a poftion of the cIltting edg 19 becofnes dLllled. Thus the blade 18 Inay be ffloved to a numbef of poSitionS and by Sifnply tightening the Set SofeW 20 the blade iS SecUTely poSitioned. Tho soffations of coufSe afe effective to SecuTe1y fnount the tool in any of the 1ocked of adiusted positionS,

Thus the Weafing stfipS 27, of pilot, afo effective to se cofely Soppoft tho single blade chanfofing too1 vvithoUt exceSSive vibfation ohattof. Thefefofe a c1ean and SInooth chaInfefing edge is pfovided. The tool n1ay have its cutting blade easily feInoved and Teplaced vvhenevef neceSSafy and the fnultiple shafpened edges aofded by the adjustInent of the blade leadS to long life and inexpen sive ffainfenance. 4

Thus the obiectS of the invention have een fully achieved and an ifnpfoved chan1fefing too1 11as been diSc1osedo It fnuSt be ondefstood that vafious If1odifica tionS fnay be n1ade vithont depafting ffoIn the spifit of the invention as diSclosed noT f1(In the ScoPe thereof aS dened in the appended clain1.

What is clain1ed is:

A chan1fering too1 coInpfising a oylindrical body h ving a Shank t one end and a frusto-conical poTtion at an opposite end, Said body having a Slot including a bottom Wal1 parallel to Said fruStoconica1 oTtion and lateTally spaced Side wanS, one of Said waHS being inclined rela tive t() the other Said r t Slot opening oUtwardly of said f USto-co ica1 poftion, a plufality of seTTationS on one o Said side wans, Said SerrationS eXtending SUbstan ially paTaIle1 to said bottoIn vvaH and to said fTUStoConica1 portion, a Single cutting blade diSPosed in said Sl()t, Said c11tting blade inclLlding an o uter cI1tting edge, Said blade having a pluTa1ity of SeTTations confoTIning to the SerTa tio nS of Said side waH, noanS adinstably securing Said b1ade in Said TSt slot wheTeby Said blde may be Tadia1ly adioS ed Telative to the axiS of Said too1 coI1prising, a

vvedge eleInent disposed betvveen Said blade and one of said side vvalls, IneanS locking Said Wedge in Said IiTSt Slot, Second and third SlotS in Said body, Said second and third S1(tS being circun1feTentially spaced elative to each other and to said TSt Slot and opening outwardly of said frusto conical portion, and inSeTts SecuTed in said Second and thifd slotS, Said inseTts having hardened Weang StTipS pfojecting o utWaTd1y fron1 said fruStoconicl poftions and being adapted to engage adjacent edges of a boTe to be chan1feTed theTeby piloting said toOL eeenceS cited in the 1ile of thiS patent UNITED STATES PATENTS 1,166,716 1iley et a1. 1an. 4, 1916 1,346,10S BoSSe IUly 13 1920 L9Z3 177 Tucker Aug, ZZ 1933 Z,097,898 SeverSon ITov. Z, 1937 

